TY - JOUR
T1 - Discussion
JF - Quarterly Journal of the Geological Society
JO - Quarterly Journal of the Geological Society
SP - 323
LP - 325
M3 - 10.1144/gsjgs.123.1.0323
VL - 123
IS - 1-4
A2 - ,
Y1 - 1967/09/01
UR - http://jgs.lyellcollection.org/content/123/1-4/323.abstract
N2 - Mr R. Stoneley congratulated Dr Rutland on the Successful application of theory to the explanation of an area that was otherwise difficult to understand. The late-stage movements, although suggested to be expressed along pre-existing lines of weakness, appeared to reflect tectonic processes different from those that had caused the earlier strike-slip movement; they were presumably also reflected in the Bouguer anomalies, which in nothern Luzon are in general strongly positive north-east of the Philippine fault-zone but negative to the south-west. Did Dr Rutland have any comments as to the nature of these late-stage movements?In reply to Mr Stoneley the Author said it was a fact that there was an unexpected correlation between the actual fault-pattern and that predicted by a particular theory. It was not the intention of the paper, however, to place emphasis on speculations arising from this, but rather to demonstrate the existence of a history of varying tectonic activity. The established late-stage movements did indeed, as Mr Stoneley suggested, reflect tectonic processes different from those that might have caused any earlier strike-slip movements inferred from the tectonic pattern. The late movements were undoubtedly related to the formation of the antéclises and synéclises which controlled the present disposition of mountain ranges and basins in the Philippine islands. The Bouguer anomalies were also related to these features. The author would not subscribe to the view that the late-stage vertical movements were a consequence of strike-slip in the main fault-zone.Dr Gilbert Wilson expressed his great interest in Dr
ER -